{
  "node": {
    "id": "term:condensation-control",
    "type": "Term",
    "label": "Condensation control",
    "properties": {
      "id": "condensation-control",
      "name": "Condensation control",
      "aka": [
        "desiccant",
        "desiccant cartridge",
        "breather vent"
      ],
      "section": "topic-thermal",
      "definition": "Keeping liquid water out of a sealed pack that breathes as it heats and cools. Air drawn in through the pressure-equalisation vent can condense on surfaces chilled below its dew point, so designs combine membrane vents that pass air but not water, desiccant cartridges that soak up moisture, and coolant control that avoids over-chilling.",
      "related": [
        "relative-humidity",
        "dew-point",
        "enclosure",
        "ip-rating",
        "insulation-resistance",
        "chiller"
      ],
      "url": "https://lemonergy.com/learn/glossary/condensation-control/",
      "mentions": [
        "pressure-equalisation-vent"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:4680",
      "source": "term:condensation-control",
      "target": "topic:topic-thermal",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4681",
      "source": "term:condensation-control",
      "target": "term:relative-humidity",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4682",
      "source": "term:condensation-control",
      "target": "term:dew-point",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4683",
      "source": "term:condensation-control",
      "target": "term:enclosure",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4684",
      "source": "term:condensation-control",
      "target": "term:ip-rating",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4685",
      "source": "term:condensation-control",
      "target": "term:insulation-resistance",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4686",
      "source": "term:condensation-control",
      "target": "term:chiller",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/condensation-control/pressure-equalisation-vent",
      "source": "term:condensation-control",
      "target": "term:pressure-equalisation-vent",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-thermal",
      "type": "Topic",
      "label": "Thermal management and heat transfer",
      "properties": {
        "id": "topic-thermal",
        "name": "Thermal management and heat transfer",
        "lede": "How heat is made, moved and removed in cells and packs, and the hardware that keeps a battery at the right temperature.",
        "context": "Select spatial detail for the question.",
        "example": "Equal total heat in different layouts can produce different gradients. Average temperature can miss a hot spot.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/battery-aging/",
        "lesson_label": "Open temperature and aging"
      }
    },
    {
      "id": "term:relative-humidity",
      "type": "Term",
      "label": "Relative humidity",
      "properties": {
        "id": "relative-humidity",
        "name": "Relative humidity",
        "abbr": "RH",
        "section": "topic-thermal",
        "definition": "The water vapour in air as a percentage of the most it could hold at that temperature. The same air reads a different RH when warmed or cooled, so dry rooms are specified by dew point instead. Air at 25 °C and 50 % RH has a dew point of about 14 °C: any surface colder than that collects condensation.",
        "related": [
          "dew-point",
          "dry-room",
          "condensation-control",
          "moisture-content"
        ],
        "url": "https://lemonergy.com/learn/glossary/relative-humidity/",
        "mentions": []
      }
    },
    {
      "id": "term:dew-point",
      "type": "Term",
      "label": "Dew point",
      "properties": {
        "id": "dew-point",
        "name": "Dew point",
        "section": "topic-manufacturing",
        "definition": "The temperature at which the water vapour in air would start to condense, the standard way of specifying dry-room humidity. A −40 °C dew point corresponds to about 0.5 % relative humidity at room temperature.",
        "unit": "°C",
        "related": [
          "dry-room",
          "moisture-content"
        ],
        "url": "https://lemonergy.com/learn/glossary/dew-point/",
        "mentions": [
          "relative-humidity"
        ]
      }
    },
    {
      "id": "term:enclosure",
      "type": "Term",
      "label": "Enclosure",
      "properties": {
        "id": "enclosure",
        "name": "Enclosure",
        "aka": [
          "battery housing",
          "battery tray"
        ],
        "section": "topic-pack",
        "definition": "The sealed case that carries the modules, protects them in a crash, keeps water out to an IP67 rating or better and vents gas in a thermal event. In many cars it is a structural part of the body.",
        "related": [
          "pack",
          "ip-rating",
          "cell-to-chassis",
          "venting",
          "gigacasting",
          "ul-94"
        ],
        "url": "https://lemonergy.com/learn/glossary/enclosure/",
        "mentions": []
      }
    },
    {
      "id": "term:ip-rating",
      "type": "Term",
      "label": "IP rating",
      "properties": {
        "id": "ip-rating",
        "name": "IP rating",
        "aka": [
          "ingress protection"
        ],
        "section": "topic-pack",
        "definition": "A two-digit code for how well an enclosure keeps out solids and water: the first digit for dust, the second for water. Battery packs are typically IP67, dust-tight and able to survive brief immersion.",
        "related": [
          "enclosure",
          "pack",
          "immersion-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/ip-rating/",
        "mentions": []
      }
    },
    {
      "id": "term:insulation-resistance",
      "type": "Term",
      "label": "Insulation resistance",
      "properties": {
        "id": "insulation-resistance",
        "name": "Insulation resistance",
        "aka": [
          "isolation resistance",
          "IMD"
        ],
        "section": "topic-hvsafety",
        "definition": "The resistance between the high-voltage circuit and the vehicle chassis, which must stay above about 100 Ω per volt of pack voltage so a person touching the chassis is safe. An insulation monitoring device measures it continuously.",
        "unit": "Ω/V",
        "related": [
          "pack-voltage",
          "high-voltage-interlock",
          "functional-safety",
          "insulation-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/insulation-resistance/",
        "mentions": [
          "volt"
        ]
      }
    },
    {
      "id": "term:chiller",
      "type": "Term",
      "label": "Chiller",
      "properties": {
        "id": "chiller",
        "name": "Chiller",
        "section": "topic-thermal",
        "definition": "A heat exchanger in which evaporating refrigerant from the air-conditioning circuit cools the battery coolant below ambient temperature. A radiator can only bring coolant close to outside air temperature; the chiller is what lets a pack fast-charge on a 35 °C day. Stationary storage containers use packaged chiller units for the same job.",
        "related": [
          "refrigerant-loop",
          "coolant",
          "radiator",
          "heat-exchanger",
          "fast-charging",
          "thermal-management"
        ],
        "url": "https://lemonergy.com/learn/glossary/chiller/",
        "mentions": [
          "stationary-storage"
        ]
      }
    },
    {
      "id": "term:pressure-equalisation-vent",
      "type": "Term",
      "label": "Pressure-equalisation vent",
      "properties": {
        "id": "pressure-equalisation-vent",
        "name": "Pressure-equalisation vent",
        "aka": [
          "breather membrane",
          "pack breather",
          "pressure equalization vent",
          "pressure compensation element",
          "ePTFE vent"
        ],
        "section": "topic-pack",
        "definition": "A small vent in a sealed pack enclosure, closed by a microporous membrane, often expanded PTFE, that passes air but not water or dust. It equalises internal pressure as temperature and altitude change, protecting the seals without losing the IP rating; some designs add a burst element that opens wide to release gas in thermal runaway.",
        "related": [
          "enclosure",
          "ip-rating",
          "vent",
          "venting",
          "thermal-runaway"
        ],
        "url": "https://lemonergy.com/learn/glossary/pressure-equalisation-vent/",
        "mentions": [
          "ptfe"
        ]
      }
    }
  ]
}